xanthogranulomatous pyelonephritis and renal tubulopapillary adenomas: a rare coexistence

Xanthogranulomatous pyelonephritis is an uncommon inflammatory condition accounting for 1% of chronic pyelonephritis cases. Clinically and radiologically it mimics other renal space occupying lesions. Hence, correct preoperative diagnosis is not possible in all cases and nephrectomy is done in most patients. Renal tubulopapillary adenomas are benign epithelial lesions of kidney found to be associated with papillary renal cell carcinoma, acquired renal cystic disease, long term hemodialysis, arteriosclerotic renal vascular disease, etc. Here, we report two cases of Xanthogranulomatous pyelonephritis associated with the rare finding of renal tubulopapillary adenomas.